/*
	This file is part of cpp-ethereum.
	cpp-ethereum is free software: you can redistribute it and/or modify
	it under the terms of the GNU General Public License as published by
	the Free Software Foundation, either version 3 of the License, or
	(at your option) any later version.
	cpp-ethereum is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
	GNU General Public License for more details.
	You should have received a copy of the GNU General Public License
	along with cpp-ethereum.  If not, see <http://www.gnu.org/licenses/>.
*/
/** @file Exceptions.h
 * @author Gav Wood <i@gavwood.com>
 * @date 2014
 */

// adapted from https://github.com/ethereum/cpp-ethereum/blob/develop/libdevcore/Exceptions.h

#ifndef __EXCEPTIONS_H__
#define __EXCEPTIONS_H__

#include <exception>
#include <string>

#include <boost/exception/exception.hpp>
#include <boost/exception/info.hpp>
#include <boost/exception/info_tuple.hpp>
#include <boost/exception/diagnostic_information.hpp>
#include <boost/throw_exception.hpp>
#include <boost/tuple/tuple.hpp>

#include "FixedHash.h"

namespace dev
{
    /// Base class for all exceptions.
    struct Exception: virtual std::exception, virtual boost::exception
    {
        Exception(std::string _message = std::string()): m_message(std::move(_message)) {}
        const char* what() const noexcept override { return m_message.empty() ? std::exception::what() : m_message.c_str(); }

    private:
        std::string m_message;
    };

#define DEV_SIMPLE_EXCEPTION(X) struct X: virtual Exception { const char* what() const noexcept override { return #X; } }

    /// Base class for all RLP exceptions.
    struct RLPException: virtual Exception { RLPException(std::string _message = std::string()): Exception(_message) {} };
#define DEV_SIMPLE_EXCEPTION_RLP(X) struct X: virtual RLPException { const char* what() const noexcept override { return #X; } }

    DEV_SIMPLE_EXCEPTION_RLP(BadCast);
    DEV_SIMPLE_EXCEPTION_RLP(BadRLP);
    DEV_SIMPLE_EXCEPTION_RLP(OversizeRLP);
    DEV_SIMPLE_EXCEPTION_RLP(UndersizeRLP);

    DEV_SIMPLE_EXCEPTION(BadHexCharacter);
    DEV_SIMPLE_EXCEPTION(NoNetworking);
    DEV_SIMPLE_EXCEPTION(NoUPnPDevice);
    DEV_SIMPLE_EXCEPTION(RootNotFound);
    struct BadRoot: virtual Exception { public: BadRoot(h256 const& _root): Exception("BadRoot " + _root.hex()), root(_root) {} h256 root; };
    DEV_SIMPLE_EXCEPTION(FileError);
    DEV_SIMPLE_EXCEPTION(Overflow);
    DEV_SIMPLE_EXCEPTION(FailedInvariant);
    DEV_SIMPLE_EXCEPTION(ValueTooLarge);
    DEV_SIMPLE_EXCEPTION(UnknownField);

    struct InterfaceNotSupported: virtual Exception { public: InterfaceNotSupported(std::string _f): Exception("Interface " + _f + " not supported.") {} };
    struct ExternalFunctionFailure: virtual Exception { public: ExternalFunctionFailure(std::string _f): Exception("Function " + _f + "() failed.") {} };

    // error information to be added to exceptions
    using errinfo_invalidSymbol = boost::error_info<struct tag_invalidSymbol, char>;
    using errinfo_wrongAddress = boost::error_info<struct tag_address, std::string>;
    using errinfo_comment = boost::error_info<struct tag_comment, std::string>;
    using errinfo_required = boost::error_info<struct tag_required, bigint>;
    using errinfo_got = boost::error_info<struct tag_got, bigint>;
    using errinfo_min = boost::error_info<struct tag_min, bigint>;
    using errinfo_max = boost::error_info<struct tag_max, bigint>;
    using RequirementError = boost::tuple<errinfo_required, errinfo_got>;
    using errinfo_hash256 = boost::error_info<struct tag_hash, h256>;
    using errinfo_required_h256 = boost::error_info<struct tag_required_h256, h256>;
    using errinfo_got_h256 = boost::error_info<struct tag_get_h256, h256>;
    using Hash256RequirementError = boost::tuple<errinfo_required_h256, errinfo_got_h256>;
    using errinfo_extraData = boost::error_info<struct tag_extraData, bytes>;
}

#endif // __COMMON_H__